Pretty standard fare for a rookie (from the Globe):
"I'm not going to lie," Giddens said after Friday's practice. "I'm a little frustrated right now because it's hard to pick up on things and I'm not picking up on them as fast as I would like. But that's part of being a rookie.
"The older guys tell me that's how it is as a young guy. You've got to come here and stay positive."
Doesn't sound like Doc is worried though:
So Giddens "is behind because he doesn't know any of our" plays, Rivers said. "All the young guys are (behind) because of that. He's getting better each day but he has a long way to go.
"The problem usually with young guys is coaches have patience and they don't. He wants it now so he gets frustrated. It's going to take a while, but I'm not in a hurry so it's not a big deal for me."